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Segments Of Business

6 Months Ended

Jun. 30, 2021

Segment Reporting Information [Line Items]

SEGMENTS OF BUSINESS

Certain financial information relating to Alliant Energy’s, IPL’s and WPL’s business segments is as follows. Intersegment revenues were not material to their respective operations.


Alliant Energy					ATC Holdings,	Alliant
	Utility				Non-Utility,	Energy
	Electric	Gas	Other	Total	Parent and Other	Consolidated
	(in millions)
Three Months Ended June 30, 2021
Revenues	$717	$69	$10	$796	$21	$817
Operating income (loss)	164	3	(1)	166	10	176



Net income attributable to Alliant Energy common shareowners				124	20	144
Three Months Ended June 30, 2020
Revenues	$675	$59	$10	$744	$19	$763
Operating income	152	7	1	160	8	168



Net income attributable to Alliant Energy common shareowners				118	16	134



Alliant Energy					ATC Holdings,	Alliant
	Utility				Non-Utility,	Energy
	Electric	Gas	Other	Total	Parent and Other	Consolidated
	(in millions)
Six Months Ended June 30, 2021
Revenues	$1,418	$239	$23	$1,680	$38	$1,718
Operating income	311	47	1	359	15	374



Net income attributable to Alliant Energy common shareowners				287	28	315
Six Months Ended June 30, 2020
Revenues	$1,405	$211	$22	$1,638	$41	$1,679
Operating income	298	49	4	351	5	356



Net income attributable to Alliant Energy common shareowners				289	15	304


IPL	Electric	Gas	Other	Total
	(in millions)
Three Months Ended June 30, 2021
Revenues	$402	$43	$10	$455
Operating income	107	3	1	111
Net income available for common stock				86
Three Months Ended June 30, 2020
Revenues	$388	$34	$10	$432
Operating income	82	5	1	88
Net income available for common stock				60
Six Months Ended June 30, 2021
Revenues	$788	$134	$22	$944
Operating income	179	33	2	214
Net income available for common stock				165
Six Months Ended June 30, 2020
Revenues	$813	$117	$21	$951
Operating income	149	33	3	185
Net income available for common stock				142


WPL	Electric	Gas	Other	Total
	(in millions)
Three Months Ended June 30, 2021
Revenues	$315	$26	$—	$341
Operating income (loss)	57	—	(2)	55
Net income				38
Three Months Ended June 30, 2020
Revenues	$287	$25	$—	$312
Operating income	70	2	—	72
Net income				58
Six Months Ended June 30, 2021
Revenues	$630	$105	$1	$736
Operating income (loss)	132	14	(1)	145
Net income				122
Six Months Ended June 30, 2020
Revenues	$592	$94	$1	$687
Operating income	149	16	1	166
Net income				147

IPL [Member]

Segment Reporting Information [Line Items]

Segments Of Business

Certain financial information relating to Alliant Energy’s, IPL’s and WPL’s business segments is as follows. Intersegment revenues were not material to their respective operations.


Alliant Energy					ATC Holdings,	Alliant
	Utility				Non-Utility,	Energy
	Electric	Gas	Other	Total	Parent and Other	Consolidated
	(in millions)
Three Months Ended June 30, 2021
Revenues	$717	$69	$10	$796	$21	$817
Operating income (loss)	164	3	(1)	166	10	176



Net income attributable to Alliant Energy common shareowners				124	20	144
Three Months Ended June 30, 2020
Revenues	$675	$59	$10	$744	$19	$763
Operating income	152	7	1	160	8	168



Net income attributable to Alliant Energy common shareowners				118	16	134



Alliant Energy					ATC Holdings,	Alliant
	Utility				Non-Utility,	Energy
	Electric	Gas	Other	Total	Parent and Other	Consolidated
	(in millions)
Six Months Ended June 30, 2021
Revenues	$1,418	$239	$23	$1,680	$38	$1,718
Operating income	311	47	1	359	15	374



Net income attributable to Alliant Energy common shareowners				287	28	315
Six Months Ended June 30, 2020
Revenues	$1,405	$211	$22	$1,638	$41	$1,679
Operating income	298	49	4	351	5	356



Net income attributable to Alliant Energy common shareowners				289	15	304


IPL	Electric	Gas	Other	Total
	(in millions)
Three Months Ended June 30, 2021
Revenues	$402	$43	$10	$455
Operating income	107	3	1	111
Net income available for common stock				86
Three Months Ended June 30, 2020
Revenues	$388	$34	$10	$432
Operating income	82	5	1	88
Net income available for common stock				60
Six Months Ended June 30, 2021
Revenues	$788	$134	$22	$944
Operating income	179	33	2	214
Net income available for common stock				165
Six Months Ended June 30, 2020
Revenues	$813	$117	$21	$951
Operating income	149	33	3	185
Net income available for common stock				142


WPL	Electric	Gas	Other	Total
	(in millions)
Three Months Ended June 30, 2021
Revenues	$315	$26	$—	$341
Operating income (loss)	57	—	(2)	55
Net income				38
Three Months Ended June 30, 2020
Revenues	$287	$25	$—	$312
Operating income	70	2	—	72
Net income				58
Six Months Ended June 30, 2021
Revenues	$630	$105	$1	$736
Operating income (loss)	132	14	(1)	145
Net income				122
Six Months Ended June 30, 2020
Revenues	$592	$94	$1	$687
Operating income	149	16	1	166
Net income				147

WPL [Member]

Segment Reporting Information [Line Items]

Segments Of Business

Certain financial information relating to Alliant Energy’s, IPL’s and WPL’s business segments is as follows. Intersegment revenues were not material to their respective operations.


Alliant Energy					ATC Holdings,	Alliant
	Utility				Non-Utility,	Energy
	Electric	Gas	Other	Total	Parent and Other	Consolidated
	(in millions)
Three Months Ended June 30, 2021
Revenues	$717	$69	$10	$796	$21	$817
Operating income (loss)	164	3	(1)	166	10	176



Net income attributable to Alliant Energy common shareowners				124	20	144
Three Months Ended June 30, 2020
Revenues	$675	$59	$10	$744	$19	$763
Operating income	152	7	1	160	8	168



Net income attributable to Alliant Energy common shareowners				118	16	134



Alliant Energy					ATC Holdings,	Alliant
	Utility				Non-Utility,	Energy
	Electric	Gas	Other	Total	Parent and Other	Consolidated
	(in millions)
Six Months Ended June 30, 2021
Revenues	$1,418	$239	$23	$1,680	$38	$1,718
Operating income	311	47	1	359	15	374



Net income attributable to Alliant Energy common shareowners				287	28	315
Six Months Ended June 30, 2020
Revenues	$1,405	$211	$22	$1,638	$41	$1,679
Operating income	298	49	4	351	5	356



Net income attributable to Alliant Energy common shareowners				289	15	304


IPL	Electric	Gas	Other	Total
	(in millions)
Three Months Ended June 30, 2021
Revenues	$402	$43	$10	$455
Operating income	107	3	1	111
Net income available for common stock				86
Three Months Ended June 30, 2020
Revenues	$388	$34	$10	$432
Operating income	82	5	1	88
Net income available for common stock				60
Six Months Ended June 30, 2021
Revenues	$788	$134	$22	$944
Operating income	179	33	2	214
Net income available for common stock				165
Six Months Ended June 30, 2020
Revenues	$813	$117	$21	$951
Operating income	149	33	3	185
Net income available for common stock				142


WPL	Electric	Gas	Other	Total
	(in millions)
Three Months Ended June 30, 2021
Revenues	$315	$26	$—	$341
Operating income (loss)	57	—	(2)	55
Net income				38
Three Months Ended June 30, 2020
Revenues	$287	$25	$—	$312
Operating income	70	2	—	72
Net income				58
Six Months Ended June 30, 2021
Revenues	$630	$105	$1	$736
Operating income (loss)	132	14	(1)	145
Net income				122
Six Months Ended June 30, 2020
Revenues	$592	$94	$1	$687
Operating income	149	16	1	166
Net income				147

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8924-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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+ Details